Skip to Main content Skip to Navigation
Journal articles

Paleogenetic Analyses Reveal Unsuspected Phylogenetic Affinities between Mice and the Extinct Malpaisomys insularis, an Endemic Rodent of the Canaries

Abstract : Background: The lava mouse, Malpaisomys insularis, was endemic to the Eastern Canary islands and became extinct at the beginning of the 14th century when the Europeans reached the archipelago. Studies to determine Malpaisomys' phylogenetic affinities, based on morphological characters, remained inconclusive because morphological changes experienced by this insular rodent make phylogenetic investigations a real challenge. Over 20 years since its first description, Malpaisomys' phylogenetic position remains enigmatic. Methodology/Principal Findings: In this study, we resolved this issue using molecular characters. Mitochondrial and nuclear markers were successfully amplified from subfossils of three lava mouse samples. Molecular phylogenetic reconstructions revealed, without any ambiguity, unsuspected relationships between Malpaisomys and extant mice (genus Mus, Murinae). Moreover, through molecular dating we estimated the origin of the Malpaisomys/mouse clade at 6.9 Ma, corresponding to the maximal age at which the archipelago was colonised by the Malpaisomys ancestor via natural rafting. Conclusion/Significance: This study reconsiders the derived morphological characters of Malpaisomys in light of this unexpected molecular finding. To reconcile molecular and morphological data, we propose to consider Malpaisomys insularis as an insular lineage of mouse.
Complete list of metadatas

Cited literature [86 references]  Display  Hide  Download

https://hal-cnrs.archives-ouvertes.fr/hal-02338834
Contributor : Pascale Chevret <>
Submitted on : Friday, May 29, 2020 - 7:47:55 PM
Last modification on : Friday, September 18, 2020 - 2:34:36 PM

File

2012_Pages_Plos One_1.pdf
Publisher files allowed on an open archive

Identifiers

Citation

Marie Pages, P Chevret, Muriel Gros-Balthazard, Sandrine Hughes, Josep Antoni Alcover, et al.. Paleogenetic Analyses Reveal Unsuspected Phylogenetic Affinities between Mice and the Extinct Malpaisomys insularis, an Endemic Rodent of the Canaries. PLoS ONE, Public Library of Science, 2012, 7 (2), pp.e31123. ⟨10.1371/journal.pone.0031123⟩. ⟨hal-02338834⟩

Share

Metrics

Record views

189

Files downloads

107